Atari has several subsidiary and branch names. For related companies, see the sub-categories, below.

Atari (from a Japanese verb meaning "to hit the target") is a corporate and brand name owned by several entities since its inception in 1972, currently by Atari Interactive, a subsidiary of the French publisher Atari, SA (ASA). The original Atari, Inc. founded in 1972 by Nolan Bushnell and Ted Dabney was a pioneer in arcade games, home video game consoles, and home computers. The company's products, such as Pong and the Atari 2600, helped define the electronic entertainment industry from the 1970s to the mid-1980s.

In 1984, the original Atari Inc. was split due to its role in the video game crash of 1983, and the arcade division was turned into Atari Games Inc.[4] Atari Games received the rights to use the logo and brand name with appended text "Games" on arcade games, as well as rights to the original 1972–1984 arcade hardware properties. The Atari Consumer Electronics Division properties were in turn sold to Jack Tramiel's Tramel Technology Ltd., which then renamed itself to Atari Corporation. In 1996, Atari Corporation reverse merged with disk drive manufacturer JT Storage (JTS), becoming a division within the company.

In 1998, Hasbro Interactive acquired all Atari Corporation related properties from JTS, creating a new subsidiary, Atari Interactive. Infogrames Entertainment (IESA) bought Hasbro Interactive in 2001 and renamed it to Infogrames Interactive, later Atari Interactive in 2003, when Infogrames Inc. licensed the Atari name and logo from the latter and changed its name to Atari Inc., a name used for a company founded in 1993 as GT Interactive, which IESA also renamed to Infogrames, Inc. and acquired a 62% controlling interest in by 1999.[12] After IESA's acquisition of Hasbro Interactive, Infogrames, Inc. intermittently published Atari branded titles for Infogrames Interactive. On October 11, 2008, Infogrames completed its acquisition of Atari, Inc., making it a wholly owned subsidiary.